Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 137.1 >
edited by Mengting Qiu
on 2024/09/12 08:51
To version < 133.1 >
edited by Edwin Chen
on 2024/05/08 22:27
>
Change comment: There is no comment for this version

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Author
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1 -XWiki.ting
1 +XWiki.Edwin
Content
... ... @@ -64,10 +64,11 @@
64 64  * STM32L072xxxx MCU
65 65  * SX1276/78 Wireless Chip 
66 66  * Power Consumption:
67 -** Idle: 4mA@12v
68 -** 20dB Transmit: 34mA@12v
69 -* Operating Temperature: -40 ~~ 85 Degree, No Dew
70 70  
68 +* Idle: 4mA@12v
69 +* 20dB Transmit: [[34mA@12v>>mailto:34mA@12v]]
70 +
71 +
71 71  (% style="color:#037691" %)**Interface for Model: LT22222-L:**
72 72  
73 73  * 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
... ... @@ -77,44 +77,101 @@
77 77  * 2 x 0~~30V Analog Input (res:0.01v)
78 78  * Power Input 7~~ 24V DC. 
79 79  
81 +
80 80  (% style="color:#037691" %)**LoRa Spec:**
81 81  
82 -* Frequency Range:
83 -** Band 1 (HF): 862 ~~ 1020 Mhz
84 -** Band 2 (LF): 410 ~~ 528 Mhz
85 -* 168 dB maximum link budget.
86 -* +20 dBm - 100 mW constant RF output vs.
87 -* +14 dBm high efficiency PA.
88 -* Programmable bit rate up to 300 kbps.
89 -* High sensitivity: down to -148 dBm.
90 -* Bullet-proof front end: IIP3 = -12.5 dBm.
91 -* Excellent blocking immunity.
92 -* Low RX current of 10.3 mA, 200 nA register retention.
93 -* Fully integrated synthesizer with a resolution of 61 Hz.
94 -* FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
95 -* Built-in bit synchronizer for clock recovery.
96 -* Preamble detection.
97 -* 127 dB Dynamic Range RSSI.
98 -* Automatic RF Sense and CAD with ultra-fast AFC.
99 -* Packet engine up to 256 bytes with CRC.
100 100  
85 +* (((
86 +(((
87 +Frequency Range:
88 +)))
89 +
90 +* (((
91 +Band 1 (HF): 862 ~~ 1020 Mhz
92 +)))
93 +* (((
94 +Band 2 (LF): 410 ~~ 528 Mhz
95 +)))
96 +)))
97 +* (((
98 +168 dB maximum link budget.
99 +)))
100 +* (((
101 ++20 dBm - 100 mW constant RF output vs.
102 +)))
103 +* (((
104 ++14 dBm high efficiency PA.
105 +)))
106 +* (((
107 +Programmable bit rate up to 300 kbps.
108 +)))
109 +* (((
110 +High sensitivity: down to -148 dBm.
111 +)))
112 +* (((
113 +Bullet-proof front end: IIP3 = -12.5 dBm.
114 +)))
115 +* (((
116 +Excellent blocking immunity.
117 +)))
118 +* (((
119 +Low RX current of 10.3 mA, 200 nA register retention.
120 +)))
121 +* (((
122 +Fully integrated synthesizer with a resolution of 61 Hz.
123 +)))
124 +* (((
125 +FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
126 +)))
127 +* (((
128 +Built-in bit synchronizer for clock recovery.
129 +)))
130 +* (((
131 +Preamble detection.
132 +)))
133 +* (((
134 +127 dB Dynamic Range RSSI.
135 +)))
136 +* (((
137 +Automatic RF Sense and CAD with ultra-fast AFC.
138 +)))
139 +* (((
140 +Packet engine up to 256 bytes with CRC.
141 +
142 +
143 +
144 +)))
145 +
101 101  == 1.3 Features ==
102 102  
148 +
103 103  * LoRaWAN Class A & Class C protocol
150 +
104 104  * Optional Customized LoRa Protocol
152 +
105 105  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
154 +
106 106  * AT Commands to change parameters
156 +
107 107  * Remote configure parameters via LoRa Downlink
158 +
108 108  * Firmware upgradable via program port
160 +
109 109  * Counting
110 110  
111 111  == 1.4 Applications ==
112 112  
165 +
113 113  * Smart Buildings & Home Automation
167 +
114 114  * Logistics and Supply Chain Management
169 +
115 115  * Smart Metering
171 +
116 116  * Smart Agriculture
173 +
117 117  * Smart Cities
175 +
118 118  * Smart Factory
119 119  
120 120  == 1.5 Hardware Variants ==
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136 136  
137 137  = 2. Power ON Device =
138 138  
197 +
198 +(((
139 139  The LT controller can be powered by 7 ~~ 24V DC power source. Connect VIN to Power Input V+ and GND to power input V- to power the LT controller.
200 +)))
140 140  
202 +(((
141 141  PWR will on when device is properly powered.
142 142  
205 +
206 +)))
207 +
143 143  [[image:1653297104069-180.png]]
144 144  
145 145  
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1569 1569  (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1570 1570  |(% style="background-color:#4f81bd; color:white; width:50px" %)**LEDs**|(% style="background-color:#4f81bd; color:white; width:460px" %)**Feature**
1571 1571  |**PWR**|Always on if there is power
1637 +|**SYS**|(((
1638 +After device is powered on, the SYS will **fast blink in GREEN** for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be **on GREEN for 5 seconds. **SYS will **blink Blue** on every upload and **blink Green** once receive a downlink message.
1639 +)))
1572 1572  |**TX**|(((
1573 1573  (((
1574 1574  Device boot: TX blinks 5 times.
... ... @@ -1583,16 +1583,20 @@
1583 1583  )))
1584 1584  )))
1585 1585  |**RX**|RX blinks once when receive a packet.
1586 -|**DO1**|For LT-22222-L: ON when DO1 is low, LOW when DO1 is high
1587 -|**DO2**|For LT-22222-L: ON when DO2 is low, LOW when DO2 is high
1588 -|**DI1**|(((
1589 -For LT-22222-L: ON when DI1 is high, LOW when DI1 is low
1654 +|**DO1**|
1655 +|**DO2**|
1656 +|**DO3**|
1657 +|**DI2**|(((
1658 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1590 1590  )))
1591 1591  |**DI2**|(((
1592 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1661 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1593 1593  )))
1594 -|**RO1**|For LT-22222-L: ON when RO1 is closed, LOW when RO1 is open
1595 -|**RO2**|For LT-22222-L: ON when RO2 is closed, LOW when RO2 is open
1663 +|**DI2**|(((
1664 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1665 +)))
1666 +|**RO1**|
1667 +|**RO2**|
1596 1596  
1597 1597  = 4. Use AT Command =
1598 1598  

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